Activists and relatives of a man who died after San Mateo County sheriff’s deputies shocked him with a Taser in October delivered a petition on Wednesday with tens of thousands of signatures to the county’s district attorney calling for criminal charges in the case.

Organizers said the petition had nearly 50,000 signatures demanding criminal charges against the five deputies involved in Okobi’s death. They also decried what they called “four months of zero accountability” in the incident, and accused Wagstaffe of dragging his feet in making a charging decision.

“Prosecutors have a duty to ensure police cannot kill us without consequences,” said Clarise McCants, criminal justice campaign director for Color of Change, one of the groups that organized Wednesday’s demonstration.

Wagstaffe said Wednesday that he expects to announce his decision in the last week of February or first week of March.

“I respect their views and I will do my prosecutorial duty, as I have done on all cases over the last 42 years,” Wagstaffe said of the demonstration.

Okobi was also the third person killed after being shocked with a Taser by law enforcement officers in San Mateo County last year. His death prompted a public hearing on the use of Tasers in the county where a representative from Axon, the company that manufactures Tasers, defended the weapon.

Family members who were shown video of the incident that led to Okobi’s death say it contradicts statements from the Sheriff’s Office that Okobi was running in and out of traffic and assaulted a deputy before another deputy shocked him with a Taser.

Wagstaffe has said his office will release video of the confrontation taken by bystanders, a deputy’s patrol car camera and at least one surveillance camera after the charging decision is announced. The district attorney’s office also will release investigative reports from the incident, the coroner’s report and an analysis by an outside expert on police use of force.

Nico Savidge is a reporter covering courts, crime and law enforcement for The Mercury News. He grew up in Berkeley, then lived in Wisconsin for nine years before returning to the Bay Area, making him both a local and a transplant. A graduate of the University of Wisconsin, he previously wrote for EdSource, the Wisconsin State Journal and The Janesville Gazette. He spends his time outside of work re-learning the Bay Area and losing his tolerance for cold weather.